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Tables

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Common Stock Value		0.70	0.70	0.70	0.70	0.69	0.69	0.69	0.69	0.72	0.72	0.72	0.72	0.72	0.72	0.71	0.71	0.71	0.71	0.71	0.71	0.71	0.71	NA	NA	0.71	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0.69	0.69	NA	NA	NA
Weighted Average Number Of Diluted Shares Outstanding		NA	30.03	27.91	28.34	NA	27.81	27.66	29.37	NA	29.94	30.71	31.27	NA	31.43	31.19	31.20	NA	31.12	31.05	30.92	NA	31.31	31.78	32.61	NA	35.61	35.63	35.61	NA	35.39	35.90	36.22	NA	34.95	34.95	35.38	NA	36.20	36.44	37.33	NA	40.19	40.82	40.44	NA	41.45	41.46	41.14	NA	42.35	44.14	45.95	NA	46.28	45.84	45.87	NA	44.81	44.71	44.38
Weighted Average Number Of Shares Outstanding Basic		NA	25.15	25.21	25.51	NA	26.29	26.77	28.78	NA	29.66	30.41	30.70	NA	30.74	30.80	30.84	NA	30.80	30.76	30.72	NA	31.13	31.55	32.61	NA	34.65	34.77	34.64	NA	34.71	34.69	34.37	NA	34.28	34.50	35.05	NA	35.80	36.02	36.95	NA	39.62	40.44	40.44	NA	41.19	41.16	41.14	NA	42.02	43.88	45.40	NA	45.46	45.37	45.31	NA	44.08	43.97	43.61
Earnings Per Share Basic		5.24	1.36	4.35	3.20	1.55	1.82	0.81	3.66	1.08	0.75	0.69	0.59	0.71	0.85	0.05	0.18	-0.04	0.77	0.72	0.00	0.44	0.07	0.25	-0.09	0.05	0.62	0.31	0.86	1.52	1.02	1.51	0.98	3.98	3.05	1.16	0.80	0.93	0.68	0.91	0.79	0.37	0.34	1.95	-0.05	0.35	0.65	0.22	-0.30	0.38	5.61	0.22	0.24	0.50	0.58	0.38	0.52	0.77	0.81	0.80	1.12
Earnings Per Share Diluted		4.23	1.14	3.93	2.88	1.43	1.72	0.79	3.58	1.07	0.74	0.69	0.58	0.70	0.83	0.05	0.18	-0.04	0.76	0.72	0.00	0.44	0.07	0.24	-0.09	0.05	0.60	0.30	0.84	1.48	1.00	1.46	0.93	3.85	2.99	1.14	0.79	0.92	0.68	0.89	0.78	0.36	0.34	1.93	-0.05	0.35	0.64	0.22	-0.30	0.38	5.56	0.22	0.24	0.49	0.57	0.37	0.51	0.76	0.79	0.78	1.10

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Revenue From Contract With Customer Excluding Assessed Tax		252.80	128.68	223.49	263.54	105.52	140.11	101.59	202.37	117.06	114.76	124.66	101.32	111.81	143.50	87.73	82.36	90.79	87.49	104.50	76.21	102.16	72.52	75.61	68.63	75.33	75.08	69.56	87.44	205.30	97.33	135.78	94.53	273.87	208.31	75.92	107.76	112.10	100.41	118.55	110.38	86.12	77.62	194.23	57.84	99.68	110.62	67.69	47.36	87.88	434.01	71.87	69.31	76.96	76.45	69.87	78.46	95.28	91.92	91.15	116.19
Revenue From Contract With Customer Including Assessed Tax		252.80	128.68	223.49	263.54	105.52	140.11	101.59	202.37	117.06	114.76	124.66	101.32	111.81	143.50	87.73	82.36	90.79	87.49	104.50	76.21	102.16	72.52	75.61	68.63	75.33	75.08	69.56	87.44	205.30	97.33	135.78	94.53	273.87	208.31	75.92	107.76	112.10	100.41	118.55	110.38	86.12	77.62	194.23	57.84	99.68	110.62	67.69	47.36	87.88	434.01	71.87	69.31	76.96	76.45	69.87	78.46	95.28	91.92	91.15	116.19
Revenues		252.80	128.68	223.49	263.54	105.52	140.11	101.59	202.37	117.06	114.76	124.66	101.32	111.81	143.50	87.73	82.36	90.79	87.49	104.50	76.21	102.16	72.52	75.61	68.63	75.33	75.08	69.56	87.44	205.30	97.33	135.78	94.53	273.87	208.31	75.92	107.76	112.10	100.41	118.55	110.38	86.12	77.62	194.23	57.84	99.68	110.62	67.69	47.36	87.88	434.01	71.87	69.31	76.96	76.45	69.87	78.46	95.28	91.92	91.15	116.19
Costs And Expenses		90.28	89.34	89.59	159.80	80.19	86.45	78.22	83.11	78.46	82.93	74.76	71.13	86.23	106.72	90.88	70.37	87.65	72.06	72.58	71.53	76.86	68.75	66.69	68.78	71.48	62.16	53.88	57.29	59.60	56.45	54.83	60.56	64.72	51.59	52.83	59.41	58.76	55.02	59.97	59.13	60.83	62.28	65.86	57.88	61.70	61.49	55.00	62.41	69.05	70.79	54.30	49.90	41.47	44.30	40.07	41.15	41.63	37.45	38.08	NA
General And Administrative Expense		21.20	13.54	14.29	13.84	14.61	14.68	11.69	12.31	12.56	14.42	9.52	10.88	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Operating Income Loss		162.53	39.34	133.91	103.74	25.32	53.65	23.38	119.26	38.59	31.84	49.90	30.18	25.59	36.78	-3.15	11.99	3.14	15.43	31.92	4.68	25.30	3.77	8.91	-0.15	3.85	12.92	15.68	30.15	145.70	40.88	80.95	33.97	209.15	156.72	23.08	48.36	53.34	45.39	58.58	51.24	25.29	15.34	128.37	-0.04	37.98	49.13	12.69	-15.04	18.83	363.22	17.57	19.41	35.49	32.15	29.81	37.31	53.65	54.47	53.07	74.68
Interest Paid Net		8.05	0.00	NA	NA	9.31	0.00	NA	NA	9.49	0.00	NA	NA	4.00	0.00	NA	NA	4.00	0.00	4.00	0.71	3.96	0.71	0.85	2.37	0.00	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Income Tax Expense Benefit		19.93	7.03	24.44	19.41	-6.16	8.54	4.33	16.84	8.19	3.32	8.03	5.96	9.33	4.25	0.02	1.76	-0.77	-12.84	5.14	1.82	7.98	-0.18	4.98	-1.80	-2.42	-21.14	1.06	-4.92	92.26	3.96	27.07	-1.62	69.98	49.40	-16.65	14.07	14.58	13.49	18.88	17.68	7.36	-0.46	46.66	-1.45	41.27	20.07	6.99	-11.62	0.83	124.84	5.42	5.74	10.05	2.80	9.27	13.03	19.86	19.51	19.00	26.45
Income Taxes Paid		30.27	20.35	7.58	9.34	29.09	8.98	16.19	4.94	2.22	0.22	1.01	3.35	13.26	5.04	0.47	4.33	8.02	4.42	11.56	2.23	7.75	6.71	6.57	3.20	9.45	13.66	2.75	8.05	37.62	15.06	11.12	2.99	50.01	6.34	37.86	14.42	41.95	7.07	24.05	12.71	28.89	63.17	12.43	10.39	21.63	0.25	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Profit Loss		133.11	34.19	109.66	81.65	39.09	47.15	21.29	103.52	32.01	21.77	20.58	17.70	19.81	25.21	-6.80	3.96	-2.89	21.90	20.59	-1.66	11.95	0.83	6.38	-4.21	0.86	20.11	9.78	28.73	55.25	34.73	51.54	32.78	139.30	103.52	39.03	27.15	35.15	23.79	31.95	28.33	16.15	12.63	78.11	-2.56	16.35	26.11	8.61	-12.90	15.53	235.67	9.67	10.93	NA	NA	NA	NA	NA	NA	NA	NA
Net Income Loss		133.11	34.19	109.66	81.65	39.09	47.94	21.78	105.26	32.41	22.22	21.07	17.99	21.88	26.23	1.62	5.57	-1.35	23.78	22.25	0.12	13.75	2.23	7.74	-2.80	1.83	21.41	10.71	29.93	52.50	35.54	52.50	33.76	136.47	104.47	39.99	28.07	33.04	24.52	32.60	29.07	13.79	13.51	78.90	-1.86	14.54	26.66	9.24	-12.27	15.53	235.67	9.67	10.93	22.77	26.21	17.16	23.34	34.31	35.52	34.96	48.83
Comprehensive Income Net Of Tax		132.52	35.56	109.57	81.16	40.59	47.97	19.94	105.84	32.72	21.93	21.01	17.68	21.70	26.16	1.55	5.50	-1.54	23.42	22.66	0.15	13.79	2.48	8.82	-1.76	-1.60	21.87	11.08	28.18	47.53	35.44	52.46	33.71	132.41	104.28	40.14	28.32	30.04	24.39	32.62	29.06	11.15	12.98	79.67	-2.25	11.89	25.70	9.33	-12.11	15.39	236.38	9.67	11.67	22.76	25.73	17.08	23.35	34.14	35.48	35.03	NA

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Assets		1835.53	1725.35	1636.30	1807.02	1770.81	1826.48	1760.18	1748.56	1900.11	1928.21	1617.49	1596.03	1628.16	1700.61	1497.08	1561.87	1616.28	1640.49	1538.77	1464.73	1612.08	1628.30	1545.07	1479.75	1626.56	1788.09	1619.65	1626.16	1854.42	1936.12	1838.90	1865.39	1727.85	1442.85	1469.71	1274.66	1474.48	1448.69	1461.12	1457.77	1194.59	1297.39	1423.33	1080.36	1113.18	1129.59	1153.90	1014.69	1056.61	1115.61	860.26	932.42	996.97	1022.01	1040.02	839.43	874.64	NA	NA	NA
Liabilities		978.31	1002.81	939.52	1182.73	1189.27	1238.70	1159.82	1123.26	1169.59	1226.42	932.25	835.36	875.24	965.29	780.84	829.30	819.71	837.82	748.06	689.13	825.80	825.00	744.83	654.24	688.54	773.04	583.43	590.43	981.27	1104.11	1033.24	1105.25	973.49	827.58	946.55	769.49	952.59	957.08	968.29	973.44	718.91	767.15	823.00	551.10	579.36	582.26	635.67	509.04	537.90	548.65	452.16	479.14	525.29	573.42	618.38	462.73	521.53	NA	NA	NA
Liabilities And Stockholders Equity		1835.53	1725.35	1636.30	1807.02	1770.81	1826.48	1760.18	1748.56	1900.11	1928.21	1617.49	1596.03	1628.16	1700.61	1497.08	1561.87	1616.28	1640.49	1538.77	1464.73	1612.08	1628.30	1545.07	1479.75	1626.56	1788.09	1619.65	1626.16	1854.42	1936.12	1838.90	1865.39	1727.85	1442.85	1469.71	1274.66	1474.48	1448.69	1461.12	1457.77	1194.59	1297.39	1423.33	1080.36	1113.18	1129.59	1153.90	1014.69	1056.61	1115.61	860.26	932.42	996.97	1022.01	1040.02	839.43	874.64	NA	NA	NA
Stockholders Equity		857.22	722.54	696.78	624.29	581.55	583.43	595.22	619.67	724.89	695.77	678.77	753.71	745.24	724.27	704.18	712.10	773.37	783.27	769.42	752.65	761.56	782.11	788.90	812.81	927.02	1000.59	1020.47	1019.05	855.27	820.10	792.93	746.46	739.71	606.72	513.67	494.71	510.52	486.32	484.31	476.45	468.33	523.61	594.09	523.51	528.65	542.76	514.39	506.28	518.71	566.95	408.11	453.27	471.68	448.59	421.64	376.70	353.12	NA	NA	NA

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Assets Current		1230.82	1153.74	1057.12	1215.44	1167.62	1257.69	1192.15	1196.41	1344.67	1352.49	1035.80	1001.21	1050.29	1122.77	922.70	984.88	1026.88	1031.96	921.01	875.85	1016.33	1022.52	941.00	875.95	1024.25	1190.91	1200.52	1208.40	1395.79	1420.30	1336.02	1342.23	1221.12	974.74	966.48	798.10	1010.97	1086.28	1117.19	1117.12	843.18	959.99	1117.09	815.45	857.51	879.29	903.88	761.51	814.35	881.66	622.53	705.84	768.89	782.06	793.45	611.49	619.56	NA	NA	NA
Cash And Cash Equivalents At Carrying Value		527.36	401.09	299.76	440.24	437.08	518.48	277.60	430.62	693.48	539.65	833.53	783.02	706.28	467.61	410.14	396.16	473.47	746.56	670.29	515.79	745.49	735.89	531.70	503.24	488.73	508.83	523.78	417.48	433.01	283.56	180.95	139.07	404.07	187.16	601.39	524.31	510.21	477.64	507.04	687.20	428.57	368.80	383.05	391.45	497.71	555.54	459.02	368.69	349.84	520.89	168.99	268.63	342.21	409.65	379.59	200.12	215.45	313.62	217.43	214.37
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents		551.55	410.78	309.00	461.19	442.96	525.71	290.87	442.71	703.16	548.99	845.19	789.81	713.22	469.99	411.97	400.93	477.66	752.04	677.28	529.73	757.10	746.20	543.16	516.61	475.06	524.77	NA	417.48	433.01	283.56	NA	NA	404.07	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Short Term Investments		430.85	412.12	460.58	544.39	569.28	565.44	563.12	520.06	508.30	323.77	67.08	116.20	235.34	433.20	425.76	488.56	453.17	172.82	168.95	265.11	179.20	211.74	299.46	289.81	470.72	549.52	576.78	699.14	724.98	683.65	704.43	747.07	548.69	594.39	212.51	134.39	423.50	389.80	400.56	223.98	275.36	363.89	289.86	293.14	200.74	NA	310.77	267.12	227.44	260.44	355.13	347.37	335.78	280.94	321.52	327.32	326.22	NA	NA	NA
Accounts Receivable Net Current		188.30	212.42	223.64	145.63	117.29	NA	NA	NA	53.18	NA	NA	NA	31.11	NA	NA	NA	16.01	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	22.58	33.63	NA	NA	NA
Other Assets Current		4.48	17.50	6.59	9.47	8.90	9.56	11.17	7.81	2.87	2.94	2.55	4.69	5.08	12.74	11.92	3.29	2.92	NA	NA	NA	8.53	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	10.49	9.12	NA	NA	NA
Prepaid Expense And Other Assets Current		84.31	128.11	73.14	85.17	43.98	104.20	114.63	101.69	89.72	86.03	86.39	78.36	77.55	80.30	74.80	87.66	84.22	84.29	62.39	69.34	63.37	51.55	52.66	49.58	43.44	102.79	21.97	24.99	21.51	52.97	51.59	53.56	39.89	46.31	48.40	24.79	23.39	33.88	32.47	36.70	33.53	47.77	43.18	38.57	40.04	NA	31.42	31.04	30.20	8.86	8.62	6.24	8.82	31.48	10.85	NA	9.12	NA	NA	NA
Available For Sale Securities Debt Securities		446.65	NA	NA	NA	581.53	NA	NA	NA	567.63	NA	NA	NA	242.84	NA	NA	NA	533.31	NA	NA	NA	179.20	NA	NA	NA	470.72	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Property Plant And Equipment Gross		43.75	NA	NA	NA	35.88	NA	NA	NA	33.28	NA	NA	NA	32.37	NA	NA	NA	32.86	NA	NA	NA	28.79	NA	NA	NA	41.67	NA	NA	NA	38.65	NA	NA	NA	36.76	NA	NA	NA	63.49	NA	NA	NA	60.12	NA	NA	NA	53.24	NA	NA	NA	54.48	NA	NA	NA	51.10	NA	NA	NA	47.27	NA	NA	NA
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment		25.21	NA	NA	NA	24.31	NA	NA	NA	21.95	NA	NA	NA	19.00	NA	NA	NA	16.23	NA	NA	NA	18.57	NA	NA	NA	31.62	NA	NA	NA	27.98	NA	NA	NA	24.14	NA	NA	NA	51.35	NA	NA	NA	47.57	NA	NA	NA	43.70	NA	NA	NA	46.65	NA	NA	NA	43.11	NA	NA	NA	38.92	NA	NA	NA
Property Plant And Equipment Net		18.54	10.87	10.86	11.08	11.57	11.18	11.68	11.45	11.34	10.16	11.26	12.31	13.38	14.18	14.59	15.63	16.63	16.24	11.92	10.24	10.22	10.02	10.74	10.58	10.05	10.28	10.57	10.19	10.67	11.10	11.32	12.03	12.63	11.28	11.58	12.80	12.15	11.07	11.48	10.84	12.55	9.31	9.37	9.10	9.54	NA	7.20	7.32	7.82	7.08	6.95	7.23	8.00	7.45	7.61	7.89	8.34	NA	NA	NA
Long Term Investments		19.90	NA	NA	NA	31.90	NA	NA	NA	19.60	NA	NA	NA	21.30	NA	NA	NA	15.50	NA	NA	NA	14.20	NA	NA	NA	17.40	NA	NA	NA	19.20	NA	NA	NA	14.60	NA	NA	NA	12.60	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Goodwill		22.40	22.42	22.42	22.42	22.40	22.42	22.42	22.42	22.40	22.42	22.42	22.42	22.40	22.42	22.42	NA	22.40	NA	NA	NA	22.40	NA	NA	NA	22.42	22.42	NA	NA	16.00	NA	NA	NA	16.20	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Other Assets Noncurrent		149.40	150.44	165.92	156.06	149.66	137.47	125.08	114.75	95.72	102.11	95.70	104.22	102.50	96.96	95.40	71.42	74.04	76.08	78.74	79.15	76.03	61.37	71.40	66.74	60.47	63.88	50.22	47.66	37.96	37.07	33.91	34.07	33.81	15.30	15.22	13.31	13.22	7.43	0.81	0.96	1.54	2.06	2.17	2.30	3.14	NA	19.09	19.59	26.19	26.55	26.97	27.55	28.01	28.28	47.90	43.28	44.68	NA	NA	NA
Available For Sale Debt Securities Amortized Cost Basis		446.66	NA	NA	NA	581.75	NA	NA	NA	568.24	NA	NA	NA	243.00	NA	NA	NA	532.98	NA	NA	NA	178.73	NA	NA	NA	473.28	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Liabilities Current		725.81	711.77	699.35	903.82	881.13	445.45	446.50	254.39	271.35	290.46	232.95	308.61	371.56	418.03	234.22	253.23	295.76	317.41	203.93	185.83	305.56	334.30	242.90	448.15	179.40	293.55	128.30	126.19	376.44	440.44	379.68	414.67	425.48	238.24	371.38	171.22	399.97	406.58	398.35	385.66	205.17	217.69	245.42	105.85	126.44	126.55	166.05	164.34	172.91	279.67	165.43	141.56	173.15	167.63	164.78	160.24	178.56	NA	NA	NA
Long Term Debt Current		456.33	454.25	453.77	579.37	578.75	125.77	125.63	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0.00	0.00	94.17	93.13	91.95	302.51	0.00	NA	NA	NA	0.00	NA	NA	NA	0.00	0.00	0.00	0.00	227.17	224.35	221.61	218.87	0.00	NA	NA	NA	NA	NA	NA	NA	0.00	0.00	0.00	0.10	0.18	0.25	0.30	0.32	0.29	NA	NA	NA
Other Accrued Liabilities Current		15.56	21.67	12.64	29.52	11.60	13.57	9.98	39.10	23.51	27.11	24.67	32.42	29.35	38.52	27.18	19.93	21.29	NA	NA	NA	11.38	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	7.42	4.76	NA	NA	NA
Dividends Payable Current		11.56	11.37	10.05	10.15	10.23	10.35	9.27	9.45	10.38	10.38	10.38	10.80	10.74	10.74	10.79	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	4.54	4.53	NA	NA	NA
Accrued Liabilities Current		25.13	42.29	40.89	122.17	98.04	101.19	108.33	NA	23.51	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Contract With Customer Liability Current		178.01	156.88	156.79	155.97	153.60	167.62	172.65	178.82	189.06	210.98	168.46	238.63	291.67	325.38	158.90	192.42	219.94	248.09	141.53	126.30	146.65	171.43	NA	NA	111.67	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Long Term Debt Noncurrent		15.44	18.30	17.69	28.03	29.02	485.48	483.92	607.91	607.07	605.86	604.25	424.10	422.75	421.42	420.60	419.40	367.99	363.52	359.12	354.82	350.59	346.40	342.42	19.06	317.38	313.53	291.95	288.51	285.13	281.77	278.48	275.22	272.02	268.85	265.73	262.63	259.60	256.56	253.59	250.67	217.84	215.50	213.25	210.99	208.81	NA	204.53	202.43	200.39	198.36	196.39	194.40	192.53	NA	NA	0.10	0.18	NA	NA	NA
Other Liabilities Noncurrent		54.94	56.08	56.22	56.93	55.25	52.69	56.82	55.89	53.60	53.51	49.98	50.78	61.47	59.17	43.57	44.52	47.89	48.30	45.61	43.98	46.00	36.81	38.03	48.46	34.14	30.50	9.89	9.76	10.03	8.84	16.72	16.40	14.97	10.97	10.78	4.47	3.98	3.84	3.75	3.96	2.57	1.69	0.99	0.90	0.25	NA	0.00	0.00	2.78	3.38	2.92	2.48	5.65	9.39	14.23	12.61	10.61	NA	NA	NA
Operating Lease Liability Noncurrent		15.77	16.82	17.66	18.55	17.39	17.94	18.79	NA	19.92	NA	NA	NA	17.78	NA	NA	NA	23.04	NA	NA	NA	24.14	15.87	16.92	12.91	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Stockholders Equity		857.22	722.54	696.78	624.29	581.55	583.43	595.22	619.67	724.89	695.77	678.77	753.71	745.24	724.27	704.18	712.10	773.37	783.27	769.42	752.65	761.56	782.11	788.90	812.81	927.02	1000.59	1020.47	1019.05	855.27	820.10	792.93	746.46	739.71	606.72	513.67	494.71	510.52	486.32	484.31	476.45	468.33	523.61	594.09	523.51	528.65	542.76	514.39	506.28	518.71	566.95	408.11	453.27	471.68	448.59	421.64	376.70	353.12	NA	NA	NA
Stockholders Equity Including Portion Attributable To Noncontrolling Interest		857.22	722.54	696.78	624.29	581.55	587.78	600.36	625.30	730.51	701.79	685.24	760.67	752.92	735.32	716.25	732.57	796.57	802.68	790.71	775.60	786.28	803.30	800.24	825.51	938.01	1015.05	1036.22	1035.73	873.15	832.02	805.66	760.14	754.37	615.27	523.16	505.17	521.89	491.61	492.83	484.34	475.68	530.24	600.32	529.26	533.82	547.32	518.23	505.65	518.71	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Common Stock Value		0.70	0.70	0.70	0.70	0.69	0.69	0.69	0.69	0.72	0.72	0.72	0.72	0.72	0.72	0.71	0.71	0.71	0.71	0.71	0.71	0.71	0.71	NA	NA	0.71	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0.69	0.69	NA	NA	NA
Additional Paid In Capital		808.54	794.64	789.71	744.07	742.98	734.63	726.85	719.13	717.10	710.01	704.37	715.34	713.60	762.18	745.47	738.62	738.48	735.92	734.57	729.54	727.40	725.89	724.17	683.62	685.51	683.14	678.43	672.69	680.04	675.87	671.78	667.15	683.55	675.83	670.89	666.43	663.07	657.32	653.89	651.34	614.16	611.25	607.23	599.49	598.33	NA	586.70	583.75	579.85	577.24	575.68	573.71	573.95	568.99	563.13	NA	525.77	NA	NA	NA
Retained Earnings Accumulated Deficit		1775.82	1654.77	1632.40	1533.23	1462.07	1433.66	1396.39	1384.24	1492.05	1470.34	1458.67	1448.14	1441.11	1364.38	1349.07	1358.38	1413.97	1426.24	1413.38	1402.05	1412.78	1409.87	1418.63	1421.88	1435.97	NA	1435.99	1437.28	-1249.09	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	414.51	395.80	NA	NA	NA
Accumulated Other Comprehensive Income Loss Net Of Tax		-0.46	0.13	-1.23	-1.14	-0.65	-2.15	-2.18	-0.34	-0.92	-1.23	-0.94	-0.88	-0.57	-0.39	-0.32	-0.25	-0.18	0.01	0.37	-0.04	-0.07	-0.10	-0.35	-1.43	-2.47	-3.44	-3.90	-4.28	-2.08	-0.69	-0.60	-0.56	-0.51	0.02	0.21	0.07	-0.18	-0.01	0.13	0.11	0.12	-0.17	0.37	-0.40	-0.01	NA	1.11	1.02	0.86	1.01	0.30	0.30	-0.44	-0.43	0.04	0.12	0.11	NA	NA	NA
Stock Issued During Period Value New Issues		NA	-4.60	-1.58	-8.63	NA	-2.89	-1.39	-6.71	NA	-0.39	-0.71	-5.03	NA	-0.07	-0.71	-2.96	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value		NA	9.08	9.65	9.39	NA	10.34	8.74	7.79	NA	5.85	3.98	5.39	NA	15.08	3.77	2.15	NA	1.27	4.63	2.00	NA	1.80	-2.12	-2.10	NA	2.24	-1.82	0.82	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Net Cash Provided By Used In Operating Activities		192.03	77.63	-48.91	50.77	-23.59	310.61	-45.44	-27.85	356.51	-18.73	-33.77	-17.97	71.23	96.26	-27.26	-9.84	19.25	101.34	69.75	-26.89	17.46	125.50	-22.74	-30.78	-29.82	170.38	6.83	-0.59	217.46	104.75	19.45	-25.86	233.28	-10.17	191.43	16.23	86.78	0.66	25.30	1.77	55.98	155.75	33.14	-2.86	-0.55	-1.03	143.51	76.24	-122.81	341.75	-15.62	-25.70	-1.78	-1.30	-26.05	-5.21	-29.22	81.60	8.85	72.70
Net Cash Provided By Used In Investing Activities		-29.90	41.85	80.72	16.77	-10.87	-6.75	-53.08	-14.46	-191.51	-265.91	35.11	107.60	192.19	-17.03	51.51	-47.03	-288.07	-15.74	88.30	-94.54	24.06	89.68	-18.52	173.04	72.75	-125.25	110.96	11.52	-54.70	8.31	33.07	-206.98	-13.70	-391.58	-89.06	275.33	-46.92	-4.36	-184.81	22.11	75.91	-83.71	-30.40	-102.11	-25.66	100.22	-55.14	-57.74	20.66	89.41	-27.50	-19.61	-63.92	32.86	-1.36	-8.73	-85.16	11.59	-7.93	-76.42
Net Cash Provided By Used In Financing Activities		-21.37	-17.70	-184.01	-49.32	-48.29	-69.02	-53.32	-218.14	-10.82	-11.56	54.03	-13.04	-20.18	-21.21	-13.21	-19.87	-5.57	-10.84	-10.50	-105.95	-30.62	-12.15	67.82	-114.38	-78.96	-44.15	-11.49	-26.46	-13.30	-10.46	-10.64	-32.16	-2.67	-12.47	-25.29	-277.47	-7.29	-25.69	-20.65	234.75	-72.12	-86.29	-11.15	-1.29	-31.63	-2.67	1.96	0.35	-68.90	-79.26	-56.52	-28.26	-1.75	-1.49	206.89	-1.40	16.21	3.00	2.15	7.22

		2024-12-31	2024-09-30	2024-06-30	2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Net Cash Provided By Used In Operating Activities		192.03	77.63	-48.91	50.77	-23.59	310.61	-45.44	-27.85	356.51	-18.73	-33.77	-17.97	71.23	96.26	-27.26	-9.84	19.25	101.34	69.75	-26.89	17.46	125.50	-22.74	-30.78	-29.82	170.38	6.83	-0.59	217.46	104.75	19.45	-25.86	233.28	-10.17	191.43	16.23	86.78	0.66	25.30	1.77	55.98	155.75	33.14	-2.86	-0.55	-1.03	143.51	76.24	-122.81	341.75	-15.62	-25.70	-1.78	-1.30	-26.05	-5.21	-29.22	81.60	8.85	72.70
Net Income Loss		133.11	34.19	109.66	81.65	39.09	47.94	21.78	105.26	32.41	22.22	21.07	17.99	21.88	26.23	1.62	5.57	-1.35	23.78	22.25	0.12	13.75	2.23	7.74	-2.80	1.83	21.41	10.71	29.93	52.50	35.54	52.50	33.76	136.47	104.47	39.99	28.07	33.04	24.52	32.60	29.07	13.79	13.51	78.90	-1.86	14.54	26.66	9.24	-12.27	15.53	235.67	9.67	10.93	22.77	26.21	17.16	23.34	34.31	35.52	34.96	48.83
Profit Loss		133.11	34.19	109.66	81.65	39.09	47.15	21.29	103.52	32.01	21.77	20.58	17.70	19.81	25.21	-6.80	3.96	-2.89	21.90	20.59	-1.66	11.95	0.83	6.38	-4.21	0.86	20.11	9.78	28.73	55.25	34.73	51.54	32.78	139.30	103.52	39.03	27.15	35.15	23.79	31.95	28.33	16.15	12.63	78.11	-2.56	16.35	26.11	8.61	-12.90	15.53	235.67	9.67	10.93	NA	NA	NA	NA	NA	NA	NA	NA
Depreciation Depletion And Amortization		17.75	17.55	17.38	17.24	19.09	19.53	19.64	19.53	19.42	18.71	21.15	19.28	19.22	19.42	19.69	19.86	20.01	20.66	21.21	19.16	20.19	19.27	19.13	18.51	19.08	17.69	14.64	14.70	14.24	14.55	13.73	14.53	13.60	13.21	13.07	12.88	12.48	11.89	11.78	11.64	11.52	12.35	9.02	9.35	9.32	7.85	8.23	7.98	7.04	6.63	6.30	6.29	6.08	5.97	5.91	5.84	5.67	5.65	5.32	5.48
Increase Decrease In Accounts Payable		4.38	-1.48	-4.13	3.52	-3.39	1.84	1.85	-2.81	3.38	-2.22	5.28	0.42	-4.07	2.64	-0.08	-0.29	-1.18	1.90	-1.10	-2.48	1.91	0.56	-9.27	6.17	0.56	8.50	-3.94	1.08	-0.59	0.04	-5.75	2.52	1.64	-6.44	0.47	-1.23	2.49	1.46	2.93	-4.38	3.62	-1.57	2.18	-14.62	15.18	-2.44	5.45	-3.54	-5.88	7.43	2.38	-1.48	1.70	-0.16	-1.15	-0.95	-1.82	0.53	-0.76	2.47
Share Based Compensation		17.84	9.08	9.65	9.39	8.88	10.34	8.74	7.79	6.92	5.85	3.98	5.39	7.73	15.08	3.77	2.15	2.54	1.27	4.63	2.00	1.59	1.80	2.12	2.10	2.21	2.24	1.82	0.82	4.16	3.92	4.66	5.32	6.54	4.72	3.94	6.64	5.45	3.39	3.32	2.98	5.04	3.74	7.61	2.11	13.33	-5.18	2.27	5.52	1.86	1.50	1.56	1.57	2.08	2.67	1.69	1.68	1.87	1.30	1.19	1.44